高杂质盐矿储油库注采油运行室内试验研究

doi:10.3724/1000-6915.jrme.2025.0664

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Abstract In response to the engineering challenges associated with limited construction scale and slow development speed in high-impurity salt mines oil storage, this study proposes a novel technical approach that utilizes sediment voids to expand oil storage capacity. Laboratory experiments and theoretical analyses were conducted on sediment particles from the Yunying salt mine in Hubei Province. A evaluation system encompassing sediment characterization and sediment void storage capacity was established. The mechanism of oil injection and production under the fluid-solid coupling of oil/brine and sediment was systematically studied. The sediment void clogging risk during oil injection and production was explored. The migration rule of oil and brine in sediment voids were elucidated. The results indicate that Yunying sediments possess a void ratio exceeding 40% with favourable connectivity in total, meeting the requirements for oil storage. Multiple oil injection and production cycles demonstrate low flow resistance and a linear mass-time correlation. Dominant flow channels are established only during the initial injection, stabilizing thereafter. The oil-brine interface exhibits fingering phenomena without abnormal pressure or rate fluctuations. Transient clogging events occur randomly, presenting an overall low risk. The oil injection pressure increases stepwise as the oil-brine interface descends. The hydrophilic properties of the sediments improve brine injection and oil production efficiency through capillary forces. These findings provide scientific support for the construction of high-impurity salt mines oil storage facilities.

Key words： underground engineering deep underground energy storage salt cavern oil storage insoluble sediment particles high-impurity salt mine oil injection and production

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	Articles by authors
	WEI Xinxing1
	2
	SHI Xilin1
	2*
	LI Yinping1
	2
	3
	MA Hongling1
	2
	LI Peng1
	2
	YANG Chunhe1
	2

Cite this article:

WEI Xinxing1,2,SHI Xilin1, et al.

Oil injection and production in high-impurity salt mines oil storage: Laboratory experiments[J]. , 2026, 45(2): 466-482.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0664 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I2/466

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